English

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Alternative forms

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Etymology

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From German Feldspath (feldspar) +‎ -oid.

Noun

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feldspathoid (countable and uncountable, plural feldspathoids)

  1. (mineralogy) Any of a small group of igneous, plutonic, and volcanic minerals formed in magma that did not contain enough silica to satisfy all the chemical bonds. Feldspathoids are silica-poor variants of the feldspar group.

Hyponyms

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Derived terms

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Adjective

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feldspathoid (not comparable)

  1. (mineralogy) Resembling a feldspar.

See also

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